0601St Ford F150 Supercharger Install 04 Z

0601St Ford F150 Supercharger Install 04 Z

Looking at the picture, you can see the wrenches have pretty large ends on them. The larger one is designed to surround the bolt pattern on the fan's pulley to allow you to use the other to loosen the fan. Vinnie points out the fan has reverse threads, so in this instance it's righty loosey, lefty tighty.